Actually moving the CG forward is counterproductiv. You want the airplane to be more neutrally balanced. Start out with moderate elevator throw and CG back around 35%. The object is to have the elevator trim stay constant from just above stall to full speed. That is a product of CG and elevator trim. For a 3D type airplane the wing and stab should both be set at zero. If the CG is too far forward you will need to carry up trim. The result is much like a car that always pulls to one side. Hard to drive smoothly that way.